On 02/09/2015 05:33, Guoyanjuan wrote: > Hi, I found my code is old and I git the latest code from > <https://git.kernel.org/pub/scm/virt/kvm/kvm-unit-tests.git>https://git.kernel.org/pub/scm/virt/kvm/kvm-unit-tests.git, > some problems are solved but one. > > when I run emulate unittest, it failed. > > command: > qemu-kvm --enable-kvm -device pc-testdev -device > isa-debug-exit,iobase=0xf4,iosize=0x4 -serial stdio -device > pci-testdev -kernel x86/emulator.flat -vnc none > > logs: > FAIL: mov null, %ss Lucas Meneghel Rodrigues also reproduced this, it seems to be processor dependent. I haven't debugged it yet because it doesn't reproduce on the two systems I've tested on (Ivy Bridge i7 and Haswell Xeon E5). Can you please also try loading the kvm-intel module with the "unrestricted_guest=0" parameter, and see if it also reproduce? It might be a processor bug too. Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html